Figure 4. Changes in the biological elasticity parameter before and after treatment with the test gels

Changes in the biological elasticity parameter, R2 , before (T0 ) and after (Tf ) treatment with the test gels; the change with formula A is highly significant (p < 0.01), while for B, C and D, the differences are not statistically significant (p > 0.05). Moreover, the change induced by A was significantly different (p < 0.05) from that induced by D.